82 ecm

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Jun 2, 2011 | 09:05 AM

bpassmore

Thread Starter

Racer

Joined: Sep 2009

Posts: 437

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From: Alvin Texas

82 ecm

Does this ECM have a sleep mode where it draws no current or is it always awake? If so what should the draw be?

Jun 2, 2011 | 10:04 AM

jdp6000

Melting Slicks

Joined: Jul 2005

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From: Aurora Ontario

Quote:

Originally Posted by bpassmore

Does this ECM have a sleep mode where it draws no current or is it always awake? If so what should the draw be?

Good question. With the key off I don't think it should be drawing anything. On the other hand it does have a built in memory for codes. Logic suggests it may draw a bit. In thinking about it I don't know.

why do you ask?

Jim

Jun 2, 2011 | 11:50 AM

7T1vette

Team Owner

Joined: Jan 2006

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From: Crossville TN

If your battery is draining, it isn't because of the ECM. More likely due to a bad interior lamp dimmer device. Your drain would have to be pretty significant for it to waste a big battery...unless the battery is almost 'toast'.

Jun 2, 2011 | 07:27 PM

bpassmore

Thread Starter

Racer

Joined: Sep 2009

Posts: 437

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From: Alvin Texas

With all accessory, lights and alternator disconnected, there is a draw which will drain the battery to a no start condition. There is no draw until I connect the computer fuse in the batt compartment, then approximately 2.3 A. If the fuse is in the ECM stays warm to touch.